After-market C4 frame for 1968-1974 model year Chevrolet corvettes



FIG. 1 is a top plan view of an after-market C4 frame for 1968-1974 model year Chevrolet Corvettes showing my new design;

FIG. 2 is a side elevation view thereof;

FIG. 3 is a front elevation view thereof; and,

FIG. 4 is a rear elevation view thereof. 

The ornamental design for an after-market C4 frame for 1968-1974 model year Chevrolet Corvettes, as shown and described. 